The PLX Wideband AFR (UEGO) gauge combo combines an accurate, fast response wideband AFR (Air Fuel Ratio) controller with the world's most advanced touch screen 2 1/16" gauge (52mm). It includes a Bosch LSU4.9 wideband oxygen sensor. The wideband controller (SM-AFR) works with gasoline, bio diesel, ethanol, methanol, E85, LPG, and CNG. It includes two analog outputs (wideband 0-5V, and narrowband 0-1V) for interfacing with 3rd party devices and one digital serial output for interfacing with the DM-6 gauge and other Multi Gauges. The wideband analog output is ideal for interfacing with aftermarket ECU's and data loggers. The narrowband output is ideal for stock narrowband oxygen sensor replacement where the simulated narrowband analog output is fed back into your ECU to make it operate as if the stock narrowband oxygen sensor is still installed while running the PLX wideband setup. All three outputs can be used simultaneously. Additional features include advanced soft start technology which prolongs the oxygen sensor's life and an plastic enclosure for durability and reliability.
Gen 3 VS Gen 4
- More accurate
- Uses only 7.5Watts compared to 10Watts
- Faster response time
- Improved sensor durability
- Faster warm up time
- Maintains accuracy throughout life
- Less susceptible to contamination to surrounding pollution
- 10 years of average service life
Features:
- New Sensor: Improved reliability, reaction time, warm up time, and reduced power consumption
- New Parameters: O2 Sensor Health, O2 Sensor Reaction Time, Voltage
- New Bosch LSU 4.9 Sensor
- Plug and play controller and gauge combo
- No Calibration Required
- Soft start technology
- 2 analog outputs
- 1 digital input, 1 digital output
- Compatible with multiple fuels
Technical Specifications (DM-6)
- Left Capacitive Button
- 16 Green/Orange/Red LEDs
- 1.1" OLED Screen (124 x 36 pixels)
- Right Capacitive Button
- PLX Capacitive Button
| Physical Dimensions: | Standard 2 1/16 x 0.7" (52 X 18 mm) |
| Display Technology: | 1.10" OLED Screen (124 x 36 pixels) LED (16 Green, Yellow, Red) |
| Viewing Angle: | 180 Degrees |
| Polarization: | None |
| Supply Voltage: | 3.3V and 8V from SM Module |
| Power Consumption: | < 1 Watt |
| Cable Length: | 6' Power, 6" Serial |
| Operating Temp: | 0 - 85 Degrees Celsius |
| Human Interface: | 3 Button Capacitive Touch |
| Number of Sensors: | 16 Maximum Daisy Chain |
| Supported Units: | US Standard, Metric |
Technical Specifications (SM-AFR
- 12V power input
- 4 Prong Analog Clip
- Termination Jumper
- Serial RX Plug (In)
- Serial TX Plug (Out)
- Sensor Input Clip
| Physical Dimensions: | 2 x 2.875 x 1.125" (52 x 75 x 28mm) L x W x H |
| Technology | PLX Critical Response Technology, Fast Response PID |
| Accuracy: | < 0.1AFR (Gasoline) Wideband, < 0.2AFR (Gasoline) Narrowband 10-20 AFR (Gasoline) 0.68 - 1.36 lambda (Gasoline) |
| Measurement Range: | 0 - 100 O2 Sensor Health 0 - 1000 mS Reaction Time 9 - 20 Volts |
| Analog Outputs: | Wideband Linear 0-5V, Narrowband 0-1V (Driving Current 20mA) |
| Operating Voltage: | 9V-20V |
| Power Consumption: | 20 Watts (Max), 13 Watts (Typical) |
| Power Supply Technology: | High Efficiency Switching with Soft Start Technology |
| Operating Temperature: | 0 - 85 Deg Celsius |
| Sensor: | One Bosch LSU 4.9 |
| Enclosure: | Extruded Plastic |
Wideband Output
Wideband 0-5V analog linear output
Narrowband (Gasoline) 0-1V analog output
Included Items
- SM-AFR main unit
- Bosch LSU 4.9 wideband sensor
- O2 sensor harness 10ft
- 4ft power wire with 2.1mm connector
- 4ft Analog wires and connector with 4 terminals
- 1ft Serial Cable
- Termination jumper
- User Manual
- DM-6 2 1/16" (52 mm) Gauge
- 4 Pin connector for SM-AFR connectivity
- 2 Terminals for 4 pin Connector
- *O2 Bung and Cap Sold Separately
iMFD Sensors
The DM-6 automatically detects any of the following sensors if the corresponding sensor module is connected to the gauge.
| Sensor | Adress | Units | Min | Max |
| Wideband O2 | 0 | 0 - Lambda 1 - Gasoline (14.7) 2 - Diesel (14.6) 3 - Methanol (6.4) 4 - Ethanol (9.0) 5 - LPG (15.5) 6 - CNG (17.2) 7 - E85 (9.76) | 0.68 10 9.93 4.35 6.12 10.54 11.7 6.64 | 1.36 20 19.86 8.7 12.24 21.08 23.39 13.27 |
| Exhaust Gas Temp | 1 | 0 - Celsius 1 - Fahrenheit | 0 32 | 1023 1873 |
| Fluid Temp | 2 | 0 - Celsius Water 1 - Fahrenheit Water 2 - Celsius Oil 3 - Fahrenheit Oil | 0 32 0 32 | 150 302 150 302 |
| Vacuum | 3 | 0 - Vac in/Hg 1 - Vac mm/Hg | 29.93 760 | 0 0 |
| Boost | 4 | 2 - Boost 0-30 PSI 3 - Boost 0-2 kg/cm2 4 - Boost 0-15 PSI 5 - Boost 0-1 kg/cm2 | 0 0 0 0 | 30 2.07 15 1.12 |
| Air Intake Temp | 5 | 0 - Celsius 1 - Fahrenheit | 0 32 | 150 302 |
| RPM | 6 | 0 - 8k | 0 | 8000 |
| Speed | 7 | 0 - MPH 1 - km/H | 0 0 | 160 258 |
| Throttle Position | 8 | 0 - Percent | 0 | 100 |
| Engine Load | 9 | 0 - Percent | 0 | 1000 |
| Fluid Pressure | 10 | 0 - PSI Fuel 1 - kg/cm2 Fuel 2 - Bar Fuel 3 - PSI Oil 4 - kg/cm2 Oil 5 - Bar Oil | 0 0 0 0 0 0 | 120 8.44 8.27 120 8.44 8.27 |
| Timing | 11 | 0 - Degree | -64 | 64 |
| Manifold Absolute | 12 | 0 - kPa | 0 | 255 |
| Pressure (MAP) | 1 - inHg | 0 | 75.3 | |
| Mass Air Flow (MAF) | 13 | 0 - g/s 1 - lb/min | 0 0 | 655.35 86.69 |
| Short Term Fuel Trim | 14 | 0 - Percent | -100 | 100 |
| Long Term Fuel Trim | 15 | 0 - Percent | -100 | 100 |
| Narrowband O2 | 16 | 0 - Percent 1 - Volts | 0 0 | 100 1.275 |
| Fuel Level | 17 | 0 - Percent | 0 | 100 |
| Volt Meter | 18 | 0 - Volts | 0 | 20 |
| Knock | 19 | 0 - Volts | 0 | 5 |
| Duty Cycle | 20 | 0 - Positive 1 - Negative | 0 0 | 100 100 |
| Fuel Efficiency | 21 | 0 - MPG 1 - KM/L 2 - L=100KM | 0 0.43 | 100 42.51 |
| Analog Voltage | 22 | 0 - Volts | 0 | 5 |
| Speed (Hertz) | 23 | 0 - Hz | 0 | 10,230 |
iMFD Stands for intelligent multi-functional display. It is the PLX standard for connecting everything in a daisy-chain.
Any product labeled with
are fully compatible with each other.
Sensor Modules (SM)
Up to 32 sensor modules can be connected in any combination
To Display Modules or Data Logger
Display Modules (DM)
Up to 32 display modules can be connected in any combination
Simple Setup
The simple setup connects to just one SM module. This is great for stand alone gauges.Looking at the above diagram.
PLX Display Modules are also compatible with the PLX iMFD serial stream.
Data Logging
Two Options for datalogging are available. iMFD Data Logger and the iMFD Serial USB Adapter.
| iMFD Data Logger | iMFD Serial to USB Adapter | |||||
| From Sensor Modules |  | To Display Module | From Sensor Modules |  | To Display Modules | |
| USB to PC High Speed download from flash Real-time |  | USB to PC Real-time only | ||||